Litter-carrier.



2 SHEETS-SHEET 1.

Patented Sept. 1, 1914;

G. A. OLSON.

LITTER CARRIER.

APPLICATION FILED D30. '1, 1912.

THE NORRIS PEYERS c0. PHOTOLITHQ. WASHINGTON, D. c.

G.. A. OLSON.

LITTER CARRIER.

APPLICATION FILED DEO.7,1912.

Patented Sept. 1. 1914.

2 SHEETS- SHEET 2.

(( 1 ware aw/1,

'To all whom it may concern:

LITTER-CARRIER.

Be it known that I, GUs'rAv A. OLSON, a

citizen of the United States, residing at Albert Lea, in the county of Freeborn and State of Minnesota, have invented certain newv and useful Improvements inLitter-Carriers'; and I do hereby declare the following to be a full, clear, and exact description of the invention, suchas will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to litter carriers and is in the nature of an improvement onor vmodification of that'type. of carrier which is disclosed and claimed in my prior Patent 978,332, of date,":-December 13th, 1910; but generally stated, the invention consists of. the novel devices and combinations of devices hereinafter described and defined in the claim. i

In the accompanying drawings which illustrate the invention, likeech'a racters indicate like parts throughout the several views.

Referring to the drawings, Figure l is a.

sideelevationwith some parts brokenawami showing the improved carrier; Fig. 2 isia transverse vertical SGOtlOIl tLlCGIl on the hne a'ificonFig. 1; Fig. 8 is, a horizontal sec- .t1on taken on the line 00 on Fig. .1; 1- 1s-a transverse section taken on the hne on, Fig. Fig; 0 is a vertical'sectio i taken on the line Q35 01 on Fig. 4, some parts being shown in full; and Fig. 6 is a detail view. in side elevation with some parts broken away illustrating the manner in which the cable guiding sheaves interlock with cooperating vertical channels,,.on the vertically ,movable bucket supporting bail.

The numeral 1 indicates a track rail shown supportedby hangers 2 from the suitable overlying supporting means 3. The track structure, however, maybe of any suitable form andarrangement.

The bucket 4: is provided at ts ends with trunnions 5 that "are journaled in the depend'ng ends of an inverted approximately Ushaped bucket supporting bail or frame 6. Grooved truck wheels 7 run on the rails 1 and are 1ournaled to small frames 8 to the intermediate aortions of which; the u er p v l o I PP prior .Patent 978,332,

Specification of Letters Patent. Pa feflted Sept. 1, 1914 App11catlonfi1edDecen1ber7,1912. Seria1.1\To.7 35,=63l i i v i en'dsof hanger brackets 9 are attached. The if lower ends of the hanger brackets9 are secured to a long horizontally extended truck frame 10. A long horizontal shaftj11=ex tended below the body of the truck; frame is journaled in suitablebearings thereon,

and is provided with beveled .pinions 12 that mesh withgears 13 secured on the ends of Windlass drums le journaled in depending arms. 15 of the saidtruckfraine 10.

These pinions 12 are reversely faced so that they will simultaneously rotate the two drums 14 in opposite directions at the same speed. A pair ofbucket supporting cables NITED srarns P TE T ormon 16 are wound upon and attached, one to each of the drums land from the said A drums the said; cables are reversely extended, each past the upon which'it is not woundfand over aguide sheave 17 journaled to bearmglugs on the said truck frame 10. The lowerends of'the cables 16,

are. attachedv to the bucket supporting bail 6., Rigidly secured onthe bail 6 adjacent to thejpoints where the cables 16 are at- -tache'd. thereto are upwardly extended chanlid-shaped alining'lugs '18, :which, when the bail "is raised, engage with the I sheave 17 and holdthe ball against endw se swinging -movements;

3 Applied, on projectinglend of the shaft 11 is a spring retracted driving wheel 19 provided with a depending operating cable 20'. By drawingdownward on said cable the shaft '11 will be positively rotated in a direction to .cause the drums 14L and cables 16lto raise the bucket. Preferably, a pawl as a connection between-the, wheel.19 and shaft 11, so to permit thelbucketjto be raised by. a succession of 'movements ofthe I and ratchet device, such as'disclosed n ,my I

v of dateDecembei'.13th, 1910, entitled Litter .carrierf is employed,

witha driving dog 22: that engages within I ternal teeth of a -;brake drun1 23,,wh1ch, as I shown, is journaled on a' hub 24:, formedonone depending end of. the truck frame 10 (see Figs. 4 and :5)

, Thenumeral 25 indicates alever-like rewhich is attached to and depends from the free end of the retaining dog 25. The numeral 28 indicates a divided arm, the ends of which are pronged and. the sections of:

which are-yieldingly drawn together by a coeperating spring and bolt 29, which fries tionally clamps the .inner ends of the sections of said arm upon the shaft 11. The retaining dog 25 is provided with a depend ing dog equipped with a tripping pin 30 that works between the prongs of the outer end of the arm 28. A stop pin 31 on the bearing 26 limits the movement of the said arm 28 in the direction of the arrow marked on the ratchet wheel 21, on Fig. 4:. Also thesaid stop 31 limits the movements of the said arm 28 in the opposite direction.

The numeral 32 indicatesa flexible brake band that engages the brake drum 23 and has its ends attached to a brake lever 33, pivotally connected to a projecting arm 34 of the truck frame 10 (see Fig. 4:). Attached to the free end of the arm 33 is an operating cable 35 which is passed'over a guide sheave 36 journaled on a bracket 37 on the truck frame 10. The brake lever33 is provided with an upwardly extended arm 33 that is connected by a spring 38 to the bearing 26, or other part on the truck frame 10.

The operation summarized is substantially as follows: The shaft 11 may be rotated in the directionof the arrow marked on Fig. 4 with a step by step movement, by successively pulling on and releasing the cable 20, as already indicated, and the re taining dog 25 operating on the ratchet wheel 21 will hold the said shaft,'and hence the Windlass drum 14 where set, and this will h'old the bucket 4 at anydesired elevation. hen the carrier is to be moved with the load, the bucket supporting bail 6 will be elevated so that the alining channels 18 engage with the wheels 17. The two drums 14 being simultaneously rotated in reverse directions, will simultaneously wind up the cables 16 and therebyevenly lift the bucket supporting bail 6 at both ends.

In my prior patent, above identified, two cables were employed, but both were wound on the same drum. I have found that a better action may be produced by the two simultaneously operating drums and that better cable movement can be had by two drums than by a single drum, for the ob- 'vious reason that two drums have a greater cable holding capacity than a single drum. The cables should be attached to the respective drums on the same side of the carrier, (see Fig. 3), so that they accumulate or wind up on the drums by lateral movement in the same direction which permits the cables to be closely brought together without producing a conflict between the movements of the two cables.

When it is desired to lower the bucket, it is only necessary to draw down on the cable 27 so as to thereby release the retaining dog from the ratchet wheel 21. -When this has been done, the bucket will not immediately lower because the brake band 32 under the tension of the spring 38 is tightly set upon the brake drum 23, and at such time, rotation of the shaft ll and drums l l is prevented by engagement of the dog 22 with the internal ratchet teeth of the said brake drum 23. By. then drawing downward on the cable 35, however, the brake band 32 may be released from the drum 23 just to the desired extent to permit the loaded bucket to lower under the action of gravity. The initial'movement of the shaft 11 in the direction just stated, to wit, in the direction reverse from that indicated by the arrow on Fig. 4, carries the frictional arm 28 in the'same direction, and the latter acting on the'st ud 30 of the retaining dog 25 holds the latter in an inoperative position, while the bucket is being lowered. lVhen the bucket is being raised by manipulation of the cable 20, as already described, it is not necessary that the brake drum move, inasmuch as the dog 22 will slip over the internal ratchet teeth thereofi When the-bucket is being raised by movement of the shaft 11 in the direction of the arrow shown on Fig. 4c, the frictional arm 28 moves with said shaft in the same direction, and acting on the stud 30, automatically carries the retaining dog 25 back to its operative position. It will thus be seen that the shaft 11 must move with the drum 23 when the bucket is being lowered, but that the said shaft and the Windlass drums 14, may move independently of the said brake .drum 23 when the bucket is being raised. Also, it has been noted that the retaining dog 25 and the brake band 32 arev operated by manipulation of two independent cables or operating connections. The mechanism described has, in actual practice, been found highly efficient for the purposes had in view.

What I claim is:

The combination with a truck arranged to travel on an elevated track, of a bucket supporting frame, a bucket pivotally connected to said frame, a pair of windlasses and a pair of cable guiding wheels carried by and spaced in reverse arrangement longitudinally of said truck, cables independently attached one to each. of said Windlass drums and extended in reverse directions over said cable guiding wheels and thence downward and attached to said bucket supporting In testimony whereof I aflix my signature in presence of two wltnesses.

GUS A A. OLSON.

frame, said cables being attached to said Windlass (11111115011 the same side of said truck, a shaft carried by and extended 10ngitudinally of said truck, and gears connecting said shaft tosaid Windlass drums Witnesses: a i and arranged to simultaneously rotate the -EM1L NELSON,

same in reverse directions. I '15,? Gr. STOREY.

Copies of this patent maybe obtained for five cents each, by addressing Washington, D. G.

the f Commissioner of lapents, 

